CVE-2020-6827

Mozilla: Custom Tabs in Firefox for Android could have the URI spoofed

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Severity

Important

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · April 8, 2020

Updated · June 27, 2026

Description

The Mozilla Foundation Security Advisory describes this flaw as:

When following a link that opened an intent://-schemed URL, causing a custom tab to be opened, Firefox for Android could be tricked into displaying the incorrect URI.

Statement

This issue only affects Firefox for Android. Other operating systems are unaffected.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

CWE-939 · Improper Authorization in Handler for Custom URL Scheme